BA 73-366 Kentucky bluegrass

ABSTRACT

A variety of Kentucky bluegrass having a medium to high level of disease resistance, a desirable green color throughout the growing season, good drought recovery capability, a medium to high quality dense presistent turf forming ability under a wide variety of environmental conditions, and a high level of seed yielding capacity.

BACKGROUND

Kentucky bluegrasses have been disclosed in U.S. Plant Pat. No. 3,156 which issued on May 9, 1972; U.S. Plant Pat. No. 3,186 which issued on May 23, 1972; U.S. Plant Pat. No. 4,336 which issued on Nov. 28, 1978; U.S. Plant Pat. No. 6,280 which issued on Sep. 6, 1988; U.S. Plant Pat. No. 6,537 which issued on Jan. 17, 1989; U.S. Plant Pat. No. 6,538 which issued on Jan. 17, 1989 and U.S. Plant Pat. No. 6,585 which issued on Feb. 7, 1989; U.S. Plant Pat. No. 7,831 which issued on Mar. 17, 1992 and U.S. Plant patent application Ser. No. 07/821,403 which was filed on Jan. 14, 1992, now U.S. Plant Pat. No. 8,490.

SUMMARY OF THE VARIETY

The present invention relates to a new and improved variety of Kentucky bluegrass, Poa pratensis, that has been designated Ba 73-366.

Ba 73-366 plant material originated as a single plant selection from the open pollinated progeny of a Kentucky bluegrass seed parent developed and maintained in the O. M. Scott plant nursery at Marysville, Ohio. This seed parent was identified as Ba 65-125 in the O. M. Scott breeding program. At the time of selection, the Ba 73-366 plant appeared different from other progency plants which originated from apomictically produced seeds of Ba 65-125. As a result of this selection, a distinct variety was produced and asexually propagated by rhizomes, tillers and disseminules. Seed of Ba 73-366 was produced first at Marysville, Ohio and later at Gervais, Ore. This seed was used to plant turf performance evaluation trials and later seed production fields.

Asexual production of Ba 73-366 by propagules (tillers and rhizomes) and by disseminules (modified caryopses produced by apomixis) has consistently produced progeny plants indistinguishable from the mother plant. The apomixis level of Ba 73-366 is approximately 99% based upon examining seedling characteristics of approximately 100 to 150 seedlings from five different crop years in a growth chamber.

Ba 73-366 has a number of highly desirable characteristics including a medium to high level of resistance to Dreschslera spp. (formerly called Helminthosporium spp.) that causes leaf spot, melting out and crown rot; Puccinia spp. that causes several types of rust infections; and Sclerotinia homoeocarpa that causes dollar spot. Ba 73-366 has an attractive leafy turf type growth habit; moderately wide leaf blades; attractive green color which can be maintained throughout the entire growing season; good drought recovery capability and good turf performance as evidenced by consistently good to high scores for quality, color and density. Ba 73-366 has a high seed yield potential in the bluegrass seed production region of northwestern U.S.A.

In comparison with a number of other Kentucky bluegrasses, Ba 73-366 differs significantly in regard to the following morphological characteristics: (1) length and width of panicle, (2) whorls per panicle, (3) branches per whorl and (4) number of florets per spikelet.

Ba 73-366 has average size spikelets and glumes, flag leaf of average length but broader in width and a tendency towards a thinner leaf. Ba 73-366 has a statistically significant large flag leaf ligule and a lower level of sheath color than most other Kentucky bluegrasses tested.

Ba 73-366 has a long peduncle, average peduncle width, a culm length significantly longer than a number of other bluegrasses and a high number of nodes per culm. Also, it has an average size vegetative leaf in length and width but a statistically significant thicker leaf and leaf margin hairs. Ba 73-366 has significantly more hairs on the back side of the ligule. Under close mowing as practiced under lawn maintenance conditions, Ba 73-366 has a broader leaf blade than a number of other Kentucky bluegrasses.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is a Ba 73-366 Kentucky bluegrass panicle;

FIG. 2 is Ba 73-366 Kentucky bluegrass seed; and

FIG. 3 is a Ba 73-366 Kentucky bluegrass plant shortly after completing anthesis.

DETAILED DESCRIPTION OF THE VARIETY

Ba 73-366 Kentucky bluegrass (Poa pratensis L.) is perennial with creeping rhizomes forming a dense turf. When plants overwinter in the field under freezing temperatures and are then brought into the greenhouse during late winter to continue growth undisturbed by clipping under moderate temperatures (60°-80° F.), culms are erect averaging 42.7 cm in length with an average of 4.1 nodes per culm. The uppermost internode averages 9.2 cm and the peduncle averages 26.4 cm in length and 0.704 mm in width. The flag leaf averages 4.5 cm in length, 3.6 mm in width and 0.180 mm in thickness and a ligule length of 1.5 mm. The vegetative leaf averages 22.9 cm in length, 3.8 mm in width, 0.401 mm in thickness and a ligule length of 0.23 mm. The panicle has an average length of 88.88 mm, width of 68.4 mm, and 8.8 whorls. The lowest whorl has an average of 4.3 branches and the third whorl from the bottom of the panicle has an average of 3.7 branches. The average spikelet in the lowest whorl is 4.6 mm in length, 2.5 mm in width and has 2.6 florets with an outer glume of 2.8 mm and an inner glume of 3.2 mm in length. A spikelet from the third whorl from the bottom of the panicles is 4.7 mm in length, 2.6 mm in width and has 2.8 florets with an outer glume of 2.8 mm and an inner glume of 3.1 mm in length. Conditioned seed has an average amount of hair on the keel located on the dorsal side of the lemma. The seed of Ba 73-366 is 3.04 mm in length, 0.91 mm in width and a rachilla length of 0.80 mm with approximately 1,025,586 seeds per pound.

Comparisons of Ba 73-366 with other varieties in terms of seed dimensions and on seed numbers per pound are shown in Tables 1 and 2 as follows:

                  TABLE 1                                                          ______________________________________                                         Seed and Rachilla Measurements and Lemma Hair of                               Ba 73-366 and Other Kentucky Bluegrass Varieties                               After Conditioning.                                                                       Length    Width   Rachilla Lemma*                                   Variety    (mm)      (mm)    (mm)     Hair                                     ______________________________________                                         Ba 73-366  3.04      0.91    0.80     4.4                                      Abbey      2.97      0.89    0.80     3.8                                      Adelphi    2.70      0.84    0.65     4.4                                      America    2.40      0.68    0.68     2.8                                      Baron      3.08      0.81    0.71     5.0                                      Bristol    2.94      0.88    0.73     4.3                                      Chateau    2.81      0.86    0.71     4.5                                      Coventry   2.71      0.81    0.70     4.0                                      Eclipse    2.77      0.83    0.68     3.5                                      Georgetown 2.94      0.82    0.74     4.9                                      Gnome      2.78      0.83    0.75     4.1                                      Kelly      3.07      0.89    0.75     4.2                                      Marquis    2.97      0.87    0.83     4.7                                      Midnight   2.94      0.76    0.78     5.7                                      Nassau     3.07      0.86    0.68     3.4                                      Ram I      3.23      0.89    0.80     6.0                                      Touchdown  2.93      0.88    0.71     4.6                                      Victa      3.00      0.80    0.82     3.5                                      LSD (.05)  0.16      0.05    0.13     0.86                                     ______________________________________                                          *Rating Scale 0-9: 9 = abundant row of hairs along keel.                 

                  TABLE 2                                                          ______________________________________                                         Comparison of Seed Numbers Per Pound of Ba 73-366 and                          Other Bluegrass Varieties After Conditioning.                                  Variety       Seeds per Pounds                                                 ______________________________________                                         Ba 73-366     1,025,586                                                        Abbey         1,003,037                                                        Adelphi       1,383,976                                                        America       1,659,824                                                        Baron         1,051,693                                                        Bristol       1,270,821                                                        Chateau       1,300,105                                                        Coventry      1,246,200                                                        Eclipse       1,335,668                                                        Georgetown    1,431,000                                                        Gnome         1,017,641                                                        Kelly           921,166                                                        Marquis       1,054,642                                                        Midnight      1,227,000                                                        Nassua        1,127,130                                                        Ram 1         1,214,000                                                        Touchdown     1,211,000                                                        Victa         1,038,298                                                        ______________________________________                                    

Since environmental conditions such as soil and climate may influence morphological characteristics to some extent, comparisons of morphological characteristics of Ba 73-366 are made with other Kentucky bluegrass varieties in Tables 3-8.

                  TABLE 3                                                          ______________________________________                                         Morphological Comparison of Panicles of Ba 73-366 and                          Other Kentucky Bluegrass Varieties in the Greenhouse at                        Marysville, Ohio                                                                                                  Number of                                   Panicle    Panicle Panicle Number of                                                                              Branches                                           Nod-    Length  Width Whorls  Lower Third                               Variety                                                                               ding*   (mm)    (mm)  Per Panicle                                                                            Whorl Whorl                               ______________________________________                                         Ba 73-366                                                                             1.6     88.8    68.4  8.8     4.3   3.7                                 Abbey  1.6     80.4    59.3  9.3     3.8   3.3                                 Adelphi                                                                               1.8     106.8   76.4  10.0    3.6   3.0                                 America                                                                               2.3     67.7    51.1  8.8     3.3   3.5                                 Baron  2.2     92.6    71.0  10.0    3.4   2.8                                 Bristol                                                                               2.0     85.5    61.5  8.4     2.8   2.7                                 Chateau                                                                               2.9     65.2    57.3  8.5     3.3   2.8                                 Coventry                                                                              2.5     64.0    54.2  8.4     3.3   2.5                                 Eclipse                                                                               1.3     89.2    74.0  10.7    3.3   2.1                                 George-                                                                               1.0     80.0    57.0  7.4     2.1   2.6                                 town                                                                           Gnome  1.1     80.6    56.0  10.6    4.6   3.9                                 Kelly  2.0     88.0    70.2  9.8     4.6   3.7                                 Marquis                                                                               1.1     82.0    63.0  10.3    3.9   3.6                                 Midnight                                                                              2.0     75.8    48.4  7.1     2.9   3.0                                 Nassau 2.2     91.2    68.6  10.0    2.5   2.1                                 Ram I  1.3     67.7    47.0  7.3     3.0   3.2                                 Touch- 1.1     73.1    75.0  7.6     2.1   2.3                                 down                                                                           Victa  1.7     74.9    58.3  10.0    4.7   3.5                                 LSD    0.68    7.35    8.62  0.66    0.72  0.5                                 (.05)                                                                          ______________________________________                                          *Panicle nodding rated 1-9: 1 = Erect; 9 = 90° nodding            

                  TABLE 4                                                          ______________________________________                                         Morphological Comparison of Spikelets and Numbers of Florets                   of Ba 73-366 and Other Kentucky Bluegrass Varieties in the                     Greenhouse at Marysville, Ohio                                                                          Number of                                                    Spikelet          Florets                                                      Lower Whorl                                                                              Third Whorl Per Spikelet                                               Length  Width   Length                                                                               Width Lower Third                               Variety  (mm)    (mm)    (mm)  (mm)  Whorl Whorl                               ______________________________________                                         Ba 73-366                                                                               4.6     2.5       4.72.                                                                              2.6   2.6   2.8                                 Abbey    4.4     2.2     4.5   2.2   3.0   3.0                                 Adelphi  4.6     2.2     4.8   2.2   4.4   4.4                                 America  4.6     2.2     4.4   2.3   4.5   4.3                                 Baron    5.4     2.8     5.4   3.1   4.0   4.2                                 Bristol  4.9     2.4     5.0   2.5   4.2   4.5                                 Chateau  4.4     2.4     4.4   2.4   3.4   3.5                                 Coventry 4.4     2.2     4.5   2.4   3.2   3.5                                 Eclipse  4.6     2.4     4.6   2.4   3.6   3.6                                 Georgetown                                                                              5.0     2.3     5.0   2.6   4.8   4.9                                 Gnome    4.6     2.5     4.6   2.9   3.2   3.2                                 Kelly    5.1     2.5     5.2   2.8   3.7   3.8                                 Marquis  4.3     2.2     4.4   2.3   3.1   2.9                                 Midnight 5.3     2.5     5.5   2.4   4.4   4.7                                 Nassau   4.7     2.6     4.8   3.0   4.2   4.3                                 Ram I    5.4     2.6     5.3   2.8   3.6   3.4                                 Touchdown                                                                               5.1     2.9     4.8   2.8   4.1   4.0                                 Victa    4.5     2.5     4.5   2.4   3.3   3.2                                 LSD (.05)                                                                               0.41    0.35     0.38 0.35  0.58  0.53                                ______________________________________                                    

                  TABLE 5                                                          ______________________________________                                         Morphological Comparison of Glumes of Ba 73-366 and Other                      Kentucky Bluegrass Varieties in the Greenhouse at                              Marysville, Ohio                                                               ______________________________________                                                   Glume Length                                                                   Outer       Inner                                                                Lowest  Third     Lowest                                                                               Third                                      Variety     Whorl   Whorl     Whorl Whorl                                      ______________________________________                                         Ba 73-366   2.8     2.8       3.2   3.1                                        Abbey       2.7     2.7       3.1   3.1                                        Adelphi     2.7     2.6       3.0   3.1                                        America     2.1     2.1       2.5   2.5                                        Baron       3.1     3.2       3.6   3.7                                        Bristol     2.8     3.0       3.3   3.4                                        Chateau     2.8     2.9       3.1   3.2                                        Coventry    2.7     2.8       3.1   3.1                                        Eclipse     3.0     3.0       3.4   3.4                                        Georgetown  2.8     2.8       3.1   3.1                                        Gnome       2.8     2.9       3.3   3.3                                        Kelly       3.0     3.1       3.4   3.5                                        Marquis     2.8     2.7       3.1   3.1                                        Midnight    2.6     2.6       3.0   3.1                                        Nassau      2.6     2.7       2.9   3.0                                        Ram I       2.9     3.0       3.6   3.5                                        Touchdown   3.3     3.3       3.8   3.8                                        Victa       2.8     2.7       3.1   3.1                                        LSD (.05)   0.23    0.22      0.22  0.23                                       ______________________________________                                                   Glume Hairs                                                                      Lowest  Whorl     Third Whorl                                      Variety     Outer   Inner     Outer Inner                                      ______________________________________                                         Ba 73-366   1.7     1.3       1.3   2.0                                        Abbey       0.6     0.9       1.0   1.0                                        Adelphi     0.6     2.7       1.1   1.9                                        America     0.2     0.5       0.3   0.3                                        Baron       4.8     4.4       4.2   4.6                                        Bristol     1.0     2.2       0.8   2.2                                        Chateau     1.5     2.6       2.0   1.8                                        Coventry    1.5     2.7       1.6   2.4                                        Eclipse     1.5     1.9       1.8   1.9                                        Georgetown  1.7     2.7       1.2   2.5                                        Gnome       1.0     1.9       1.2   1.6                                        Kelly       1.3     1.5       1.1   0.8                                        Marquis     0.9     1.1       1.7   1.8                                        Midnight    1.8     2.8       1.0   2.4                                        Nassau      2.1     2.6       4.2   4.4                                        Ram I       1.1     2.3       0.7   1.2                                        Touchdown   0.7     2.1       1.1   1.4                                        Victa       0.8     1.1       1.1   1.3                                        LSD (.05)   0.85    0.92      0.89  0.87                                       ______________________________________                                    

                  TABLE 6                                                          ______________________________________                                         Morphological Comparison of Flag Leaves of Ba 73-366 and                       Other Kentucky Bluegrass                                                       Varieties in the Greenhouse at Marysville Ohio                                 ______________________________________                                                   Length   Width    Thickness                                                                               Leaf                                      Variety   (cm)     (mm)     (mm)     Angle.sup.(a)                             ______________________________________                                         Ba 73-366 4.5      3.6      0.180    5.1                                       Abbey     3.8      3.4      0.145    2.7                                       Adelphi   5.7      3.4      0.178    5.2                                       America   4.3      2.6      0.211    4.6                                       Baron     7.0      4.2      0.152    9.2                                       Bristol   4.3      3.2      0.211    2.3                                       Chateau   4.0      2.7      0.193    3.4                                       Coventry  3.7      3.0      0.140    0.7                                       Eclipse   3.9      3.2      0.193    8.7                                       Georgetown                                                                               5.7      2.8      0.221    1.9                                       Gnome     4.5      3.5      0.185    4.3                                       Kelly     4.8      4.1      0.178    3.1                                       Marquis   5.5      3.6      0.241    2.7                                       Midnight  3.8      2.6      0.189    1.1                                       Nassau    6.0      3.7      0.191    5.9                                       Ram I     3.4      3.1      0.191    1.0                                       Touchdown 4.1      2.7      0.163    3.4                                       Victa     3.9      3.7      0.267    2.1                                       LSD (.05) 1.0      0.42      0.0249  2.49                                      ______________________________________                                                   Leaf     Ligule   Leaf         Sheath                                Variety   Curve.sup.(b)                                                                           (mm)     Margin                                                                               Ligule Color                                 ______________________________________                                         Ba 73-366 4.4      1.5      0.4   2.2    0.5                                   Abbey     4.1      1.3      0.8   1.6    0.2                                   Adelphi   5.0      1.1      1.8   1.6    0.4                                   America   5.0      0.6      0.4   0.7    1.9                                   Baron     4.4      1.2      1.0   3.8    2.6                                   Bristol   5.0      0.6      0.4   1.9    2.0                                   Chateau   2.0      0.9      1.1   3.1    0.3                                   Coventry  4.3      0.9      0.8   1.7    2.0                                   Eclipse   5.0      1.1      1.0   1.0    0.2                                   Georgetown                                                                               5.0      0.6      0.6   2.0    2.0                                   Gnome     5.0      0.8      0.9   3.2    1.5                                   Kelly     4.4      1.5      1.1   2.5    2.2                                   Marquis   4.6      0.8      0.5   3.8    1.5                                   Midnight  5.0      0.4      0.4   0.3    2.0                                   Nassau    4.7      1.1      2.6   2.4    0.8                                   Ram I     4.8      0.7      0.5   1.3    2.0                                   Touchdown 4.1      1.1      1.0   1.0    7.7                                   Victa     4.6      1.3      1.0   0.8    0.5                                   LSD (.05) 0.44     0.17     0.47  0.70   0.76                                  ______________________________________                                          .sup.(a) Degrees from the stem                                                 .sup.(b) Scale 1-9: 1 curve up; 5 no curve; 9 curves down                

                  TABLE 7                                                          ______________________________________                                         Morphological Comparison of Peduncles, Culms, Node Numbers                     Per Culm and Internode Length of Ba 73-366 and Other Kentucky                  Bluegrass Varieties in the Greenhouse at Marysville, Ohio                                                             Top                                            Peduncle Peduncle Culm  Number of                                                                              Internode                                      Length   Width    Length                                                                               Nodes   Length                                  Variety                                                                               (cm)     (mm)     (cm)  Per Culm                                                                               (cm)                                    ______________________________________                                         Ba 73-366                                                                             26.4     0.704    42.7  4.1     9.2                                     Abbey  23.2     0.655    41.3  4.1     11.0                                    Adelphi                                                                               24.5     0.665    40.0  4.0     10.4                                    America                                                                               16.2     0.622    31.8  3.1     11.0                                    Baron  34.0     0.701    52.8  4.2     12.8                                    Bristol                                                                               22.9     0.734    43.5  4.0     12.6                                    Chateau                                                                               20.7     0.607    38.9  4.4     9.9                                     Coventry                                                                              19.6     0.487    34.7  4.5     7.9                                     Eclipse                                                                               23.7     0.658    39.2  4.9     9.9                                     George-                                                                               21.7     0.683    37.5  3.2     11.1                                    town                                                                           Gnome  19.4     0.836    35.3  3.1     9.2                                     Kelly  29.4     0.752    46.6  3.6     11.8                                    Marquis                                                                               27.1     0.831    34.1  3.4     7.8                                     Midnight                                                                              20.5     0.722    29.5  2.8     7.6                                     Nassau 25.0     0.663    36.0  3.9     7.4                                     Ram I  22.2     0.694    30.5  2.5     6.6                                     Touch- 23.6     0.519    38.0  4.0     8.4                                     down                                                                           Victa  21.2     0.808    37.9  3.7     10.3                                    LSD (.05)                                                                             3.17     0.774    3.32  0.44    1.94                                    ______________________________________                                    

                  TABLE 8                                                          ______________________________________                                         Morphological Comparison of Vegetative Leaves                                  of Ba 73-366 and Other Kentucky Bluegrass                                      Varieties in the Greenhouse at Marysville Ohio                                 ______________________________________                                                                                 Leaf                                            Length  Width   Thickness                                                                              Leaf   Curv.sup.(b)                           Variety  (cm)    (mm)    (mm)    Angle.sup.(a)                                                                         ature                                  ______________________________________                                         Ba 73-366                                                                               22.9    3.8     0.401   53.0   7.1                                    Abbey    20.7    3.6     0.277   51.3   7.4                                    Adelphi  19.4    3.7     0.279   67.0   4.6                                    America  21.4    3.1     0.325   66.0   6.4                                    Baron    18.2    4.3     0.290   35.0   4.4                                    Bristol  18.2    3.7     0.320   65.5   6.9                                    Chateau  23.1    3.3     0.328   39.7   5.4                                    Coventry 23.4    3.6     0.249   63.0   7.3                                    Eclipse  20.3    4.4     0.302   65.5   5.4                                    Georgetown                                                                              19.5    3.6     0.287   56.7   5.8                                    Gnome    18.2    2.9     0.290   43.2   6.6                                    Kelly    22.8    3.9     0.300   55.5   7.0                                    Marquis  19.7    3.7     0.376   46.4   7.8                                    Midnight 19.5    3.5     0.310   63.3   5.0                                    Nassau   16.3    3.7     0.292   63.2   4.9                                    Ram I    19.1    3.6     0.271   70.8   6.5                                    Touchdown                                                                               16.7    3.7     0.243   51.3   4.0                                    Victa    21.5    3.6     0.361   56.3   6.7                                    LSD (.05)                                                                               3.49    0.43     0.0439 15.90  1.54                                   ______________________________________                                         Ligule      Hairs.sup.(c)   Leaf.sup.(d)                                               Length                Leaf  Rough-                                                                               Sheath                               Variety (mm)    Ligule  Collar                                                                               Margin                                                                               ness  Color.sup.(e)                        ______________________________________                                         Ba 73-366                                                                              0.23    5.2     0.0   4.2   8.5   0.0                                  Abbey   0.32    4.4     0.0   2.8   7.7   0.0                                  Adelphi 0.34    2.6     0.0   3.4   8.8   0.0                                  America 0.12    1.7     0.0   2.1   8.4   2.0                                  Baron   0.33    4.6     0.0   3.6   7.4   0.4                                  Bristol 0.12    2.6     0.0   3.0   8.9   2.0                                  Chateau 0.22    3.3     0.0   3.1   7.8   0.5                                  Coventry                                                                               0.32    3.1     0.0   2.4   8.1   0.3                                  Eclipse 0.38    2.8     0.0   2.6   9.0   0.2                                  George- 0.14    2.5     0.0   2.4   8.5   2.0                                  town                                                                           Gnome   0.23    1.6     0.9   0.8   7.5   1.4                                  Kelly   0.34    4.6     0.0   2.4   8.8   0.0                                  Marquis 0.21    3.6     0.3   1.1   6.8   1.1                                  Midnight                                                                               0.10    1.3     0.0   1.6   7.7   2.0                                  Nassau  0.34    2.5     0.0   3.3   8.5   1.4                                  Ram I   0.09    1.8     0.0   2.0   7.7   2.0                                  Touchdown                                                                              0.29    1.4     0.0   1.3   7.9   8.0                                  Victa   0.26    2.3     0.0   1.7   7.9   0.1                                  LSD (.05)                                                                              0.04    0.79    0.21  0.70  0.89  0.57                                 ______________________________________                                          .sup.(a) Degrees from stem                                                     .sup.(b) Scale 1-9: 1 = curvature up; 5 = no curvature; 9 = curvature dow      .sup.(c) Scale 0-9: 0 = none 9 = many                                          .sup.(d) Scale 1-9: 1 = rough 9 = smooth                                       .sup.(e) Scale 0-9: 0 = no color 9 = dark purple                         

Ba 73-366 has performed well in regions throughout the U.S.A., as exhibited by a good to high level of turf quality ratings in a number of locations in comparison to other varieties. In addition, Ba 73-336 has a pleasant medium green color which can be maintained throughout the growing season, and has good winter color. Comparisons of Ba 73-366 with other varieties for quality, genetic color and winter color are set forth hereinafter in Tables 9-11. During mid-May while the turf was actively growing with adequate nutrient and water availability, readings of the vegetative color of Ba 73-366 were taken in full sun with several actively growing leaves being compared, one at a time, utilizing color chips from the Munsell Book of Color as a reference. On this basis, the color of Ba 73-366 was determined to be 5 GY 4/4. During the same time period, the color of similar leaves of other Kentucky Bluegrass varieties were determined by the same procedure to be as follows: Ba 73-540 - 5 GY 4/4; Abbey - 5 GY 3/4; and Coventry - 5 GY 4/4.

                  TABLE 9                                                          ______________________________________                                         Comparison of Turfgrass Quality of Ba 73-366 and Other                         Kentucky Bluegrass Varieties at Various Locations in                           the U.S.A.                                                                             Locations.sup.(a)                                                      Variety   A     B     C   D   E   F   G   H   I   Mean                         ______________________________________                                         Ba 73-366 7.7   7.2   5.5 5.3 6.5 5.0 5.2 6.6 6.2 5.5                          Abbey     7.0   6.9   6.2 5.5 5.4 5.1 3.5 6.8 6.6 5.5                          Able I    7.7   7.5   5.4 5.9 7.0 5.7 5.9 6.5 5.8 5.8                          A-34      8.7   6.8   5.2 4.6 7.0 5.4 5.3 6.2 4.8 5.6                          Banff     8.7   6.6   6.6 6.1 6.8 4.6 5.1 6.7 6.6 6.0                          Baron     7.7   7.2   6.4 5.7 7.0 5.7 5.3 7.0 6.0 5.8                          Challenger                                                                               8.7   6.6   5.2 4.9 6.7 5.7 5.7 6.6 5.6 5.8                          Classic   8.3   6.9   5.6 6.2 6.8 4.3 5.6 6.7 5.8 5.8                          Coventry  8.7   6.3   6.5 5.9 6.7 5.8 5.3 7.0 6.4 5.9                          Eclipse   8.3   6.7   6.9 6.5 6.2 5.1 5.9 7.3 5.7 5.9                          Estate    8.7   7.0   6.0 5.5 7.0 6.0 5.7 6.4 5.9 5.9                          Georgetown                                                                               8.0   6.6   6.0 6.6 6.5 4.9 5.7 6.9 6.6 5.9                          Glade     9.0   7.4   6.8 7.5 7.0 5.6 4.5 7.6 6.9 6.2                          Gnome     8.0   6.8   5.8 5.0 7.0 5.0 4.8 7.0 4.9 5.5                          Haga      8.0   6.7   6.4 6.3 7.0 5.1 5.7 6.8 6.3 5.9                          Kelly     7.7   7.2   6.0 5.8 6.5 5.0 5.2 6.8 5.6 5.5                          Kenblue   7.7   6.4   4.9 3.3 7.0 3.8 3.2 6.2 5.3 4.6                          Marquis   8.0   6.8   5.4 5.3 6.7 5.5 4.7 6.5 5.0 5.4                          Merion    6.7   5.1   3.8 2.7 5.2 4.2 4.8 4.8 4.4 4.2                          Midnight  8.0   7.1   6.7 8.3 6.7 4.7 5.7 7.7 5.4 6.2                          Monopoly  7.7   6.5   6.0 5.0 7.3 4.8 5.1 6.1 5.2 5.3                          Nassau    8.0   6.9   6.0 6.4 6.0 5.5 5.5 6.3 5.9 5.6                          Ram I     8.0   7.8   5.3 6.0 7.3 5.2 5.2 7.0 7.0 6.1                          South Dakota                                                                             7.0   6.6   4.7 3.0 6.2 2.1 2.7 4.9 4.4 4.1                          Touchdown 9.0   7.2   5.3 4.2 6.7 3.3 5.1 6.5 6.3 5.5                          LSD (.05) 1.2   0.8   1.0 0.9 1.1 1.1 0.5 0.5 1.2 0.3                          ______________________________________                                          Quality Rating Scale 1-9; 9 = ideal turf                                       .sup.(a) Locations: A. Fort Collins, CO; B. Ames, Iowa; C. Post Falls, ID      D. Levington, KY; E. Marysville, OH; F. Hubbard, OR; G. Pooled data from       Halsey, Hubbard and Gervais, OR; H. Beltsville, MD; I. Pullman, WA       

                  TABLE 10                                                         ______________________________________                                         A Comparison of Genetic Color of Ba 73-366 and Other Kentucky                  Bluegrasses at Various Locations in the U.S.A.                                        Locations.sup.(a)                                                       Variety  A      B      C    D    E    F    G   Mean                            ______________________________________                                         Ba 73-366                                                                               4.7    5.7    4.3  4.3  7.0  7.0  5.7 5.5                             Abbey    4.0    6.2    5.3  4.3  7.0  6.0  6.7 5.6                             Able I   4.7    7.3    8.0  6.0  7.3  7.0  6.0 6.6                             A-34     4.0    5.0    3.7  4.3  6.7  6.0  5.3 5.0                             Banff    5.7    4.7    4.0  5.0  6.7  6.0  4.0 5.1                             Baron    4.0    6.0    6.0  5.0  7.3  7.3  6.3 6.0                             Challenger                                                                              4.7    6.2    6.0  5.0  7.3  7.0  5.7 6.0                             Classic  5.3    5.2    4.3  5.0  6.7  5.7  4.3 5.2                             Coventry 5.3    5.8    5.7  4.3  7.0  6.7  6.3 5.9                             Eclipse  5.0    7.0    6.3  5.3  7.3  6.3  7.0 6.3                             Estate   4.7    6.2    5.7  5.3  6.7  6.7  5.7 5.8                             Georgetown                                                                              4.0    5.0    4.7  5.0  7.0  6.0  5.0 5.2                             Glade    5.3    7.3    7.0  6.0  7.0  7.0  7.3 6.7                             Gnome    5.3    5.5    5.7  4.7  7.3  7.0  6.7 6.0                             Haga     4.3    5.0    4.0  5.0  7.0  6.0  4.3 5.1                             Kelly    4.7    6.2    4.7  4.0  7.0  6.3  6.3 5.6                             Kenblue  3.7    4.3    3.7  3.7  7.0  6.0  4.0 4.6                             Marquis  5.0    6.5    5.3  5.0  7.3  7.0  6.7 6.1                             Merion   4.3    6.7    6.3  4.3  7.0  5.3  6.0 5.7                             Midnight 6.0    7.7    8.3  6.3  8.0  7.7  6.0 7.1                             Monopoly 4.7    4.2    4.0  4.0  6.0  6.7  4.0 4.8                             Nassau   5.7    6.7    5.7  5.0  8.0  6.7  4.7 6.0                             Ram I    6.0    7.0    7.0  6.0  7.3  7.0  6.7 6.7                             South Dakota                                                                            4.0    5.2    3.0  3.0  7.0  5.3  4.0 4.5                             Touchdown                                                                               4.7    6.3    4.3  4.7  7.3  6.3  5.0 5.5                             LSD (.05)                                                                               1.3    1.3    0.9  0.7  0.7  0.7  1.4 0.5                             ______________________________________                                          Genetic Color Quality Rating Scale 1-9; 9 = ideal turf                         .sup.(a) Locations: A. Fort Collins, CO; B. Post Falls, ID; C. North           Brunswick, NJ; D. Martinsville, NJ; E. Marysville, OH; F. Pooled data fro      Halsey, Hubbard and Gervais, OR G. Haymarket, VA;                        

                  TABLE 11                                                         ______________________________________                                         Comparison of Winter Color of Ba 73-366 and Other Kentucky                     Bluegrasses Based on Data From Various at Locations in the                     U.S.A.                                                                                    Locations                                                           Variety      A           B     Mean                                            ______________________________________                                         Ba 73-366    3.0         5.7   4.3                                             Abbey        3.3         5.7   4.5                                             Able I       4.0         7.0   5.5                                             A-34         4.0         4.3   4.2                                             Banff        4.0         5.0   4.5                                             Baron        3.7         3.7   3.7                                             Challenger   3.7         6.3   5.0                                             Classic      4.0         5.7   4.8                                             Coventry     2.7         4.3   3.5                                             Eclipse      3.3         5.7   4.5                                             Estate       3.7         5.3   4.5                                             Georgetown   4.7         7.0   5.8                                             Glade        2.7         4.7   3.7                                             Gnome        2.7         4.3   3.5                                             Haga         3.3         5.3   4.3                                             Kelly        3.0         5.3   4.2                                             Kenblue      3.3         2.7   3.0                                             Marquis      3.3         4.0   3.7                                             Merion       2.3         6.3   4.3                                             Midnight     3.3         5.3   4.3                                             Monopoly     3.3         5.0   4.2                                             Nassau       3.0         5.7   4.3                                             Ram I        3.7         6.0   4.8                                             South Dakota 1.7         2.0   1.8                                             Touchdown    3.3         5.3   4.3                                             LSD (.05)    1.0         1.6   0.9                                             ______________________________________                                          Color Rating Scale 1-9; 9 = complete color retention                           Locations: A. Martinsville, NJ B. Pooled data from Halsey, Hubbard and         Gervais, OR                                                              

Ba 73-366 develops good density and a high degree of living ground cover in the spring and summer. It has a moderately wide blade as identified by leaf texture data. Also Ba 73-366 has good seedling vigor. Data for these performance characteristics are presented in Table 12-15.

                  TABLE 12                                                         ______________________________________                                         Comparison of Summer Density of Ba 73-366 and other                            Kentucky Bluegrasses at Various Locations in the U.S.A.                        Locations                                                                      Post                                                                           Falls      Martinsville                                                                              Marysville                                                                               Kingston                                       Idaho      NJ         OH        RI     Mean                                    ______________________________________                                         Ba 73-366                                                                             6.7     4.3        6.3     4.0    5.3                                   Abbey  6.0     5.7        6.0     3.0    5.2                                   Able I 7.7     5.0        7.0     4.3    6.0                                   A-34   7.0     4.7        6.0     5.0    5.7                                   Banff  6.7     4.7        6.3     4.0    5.4                                   Baron  6.7     5.3        6.3     4.3    5.7                                   Challen-                                                                              7.7     5.7        6.7     4.0    6.0                                   ger                                                                            Classic                                                                               7.0     5.7        6.7     4.7    6.0                                   Coventry                                                                              7.0     6.0        6.7     4.0    5.9                                   Eclipse                                                                               5.7     6.3        6.3     4.0    5.6                                   Estate 7.0     5.3        7.3     4.7    6.1                                   George-                                                                               6.7     5.7        6.3     4.3    5.8                                   town                                                                           Glade  8.3     4.7        6.7     4.0    5.9                                   Gnome  7.0     5.3        6.3     4.3    5.8                                   Haga   6.7     5.7        6.3     4.3    5.8                                   Kelly  6.7     4.3        6.0     3.3    5.1                                   Kenblue                                                                               7.3     3.7        6.0     3.7    5.2                                   Marquis                                                                               6.7     5.3        6.3     4.0    5.7                                   Merion 3.3     4.3        4.7     1.7    3.5                                   Midnight                                                                              7.7     6.3        6.3     3.7    6.0                                   Monopoly                                                                              5.7     4.7        6.7     4.0    5.3                                   Nassau 6.0     5.0        5.7     3.7    5.1                                   Ram I  8.3     5.3        7.0     4.0    6.2                                   South  7.0     2.0        5.7     3.7    4.6                                   Dakota                                                                         Touch- 8.0     5.3        6.0     3.0    5.6                                   down                                                                           LSD    1.6     1.4        1.2     1.2    0.7                                   (.05)                                                                          ______________________________________                                          Density Rating Scale 1-9; 9 = maximum density                            

                  TABLE 13                                                         ______________________________________                                         Comparison of Percent Living Ground Cover in the                               Spring of Ba 73-366 and other Kentucky Bluegrasses                             at Various Locations in the U.S.A. and Canada                                          Locations                                                                      Post Falls                                                                             Carbondale                                                                               Richmond                                                     Idaho   Illinois  Ont.      Mean                                       ______________________________________                                         Ba 73-366 78.3      65.0      33.3    58.9                                     Abbey     53.3      51.7      30.0    45.0                                     Able I    81.7      43.3      30.0    51.7                                     A-34      61.7      68.3      33.3    54.4                                     Banff     80.0      76.3      43.3    66.6                                     Baron     45.0      51.0      40.0    45.3                                     Challenger                                                                               63.3      56.7      26.7    48.9                                     Classic   60.0      75.0      43.3    59.4                                     Coventry  85.0      43.3      30.0    52.8                                     Eclipse   26.7      31.7      26.7    28.3                                     Estate    61.7      79.7      33.3    58.2                                     Georgetown                                                                               76.7      76.0      30.0    60.9                                     Glade     73.3      51.7      40.0    55.0                                     Gnome     66.7      40.0      26.7    44.4                                     Haga      63.3      65.0      33.3    53.9                                     Kelly     65.0      50.7      40.0    51.9                                     Kenblue   73.3      91.0      36.7    67.0                                     Marquis   63.3      44.0      30.0    45.8                                     Merion    5.7       14.0      20.0    13.2                                     Midnight  38.3      20.7      26.7    28.6                                     Monopoly  65.0      90.3      33.3    62.9                                     Nassau    60.0      45.0      30.0    45.0                                     Ram I     71.7      76.7      36.7    61.7                                     South Dakota                                                                             71.7      88.7      36.7    65.7                                     Touchdown 56.7      38.3      36.7    43.9                                     LSD (.05) 30.0      41.0      14.4    17.6                                     ______________________________________                                    

                  TABLE 14                                                         ______________________________________                                         Comparison of Leaf Texture of Ba 73-366 and Other                              Kentucky Bluegrasses at Martinsville, New Jersey                               Variety        Leaf Texture                                                    ______________________________________                                         Ba 73-366      4.3                                                             Abbey          5.0                                                             Able I         5.7                                                             A-34           4.3                                                             Banff          5.3                                                             Baron          5.0                                                             Challenger     5.0                                                             Classic        5.3                                                             Coventry       5.0                                                             Eclipse        5.7                                                             Estate         4.3                                                             Georgetown     6.0                                                             Glade          5.0                                                             Gnome          5.3                                                             Haga           5.7                                                             Kelly          4.3                                                             Kenblue        6.0                                                             Marquis        4.3                                                             Merion         4.0                                                             Midnight       6.7                                                             Monopoly       5.0                                                             Nassau         5.0                                                             Ram I          5.0                                                             South Dakota   3.7                                                             Touchdown      5.3                                                             LSD (.05)      0.9                                                             ______________________________________                                          Leaf Texture Rating Scale 1-9; 9 = very fine                             

                  TABLE 15                                                         ______________________________________                                         Comparison of Seedling Vigor of Ba 73-366                                      and Other Kentucky Bluegrass Varieties at                                      Various Locations in the U.S.A. and Canada.sup.(a)                                            Seedling                                                                       Vigor                                                           Variety        Mean                                                            ______________________________________                                         Ba 73-366      6.3                                                             Abbey          6.4                                                             Able I         6.3                                                             A-34           6.0                                                             Banff          7.7                                                             Baron          6.7                                                             Challenger     5.6                                                             Classic        7.1                                                             Coventry       6.1                                                             Eclipse        6.1                                                             Estate         6.1                                                             Georgetown     7.0                                                             Glade          6.7                                                             Gnome          6.3                                                             Haga           7.1                                                             Kelly          6.6                                                             Kenblue        7.4                                                             Marquis        6.3                                                             Merion         2.6                                                             Midnight       5.4                                                             Monopoly       7.1                                                             Nassau         6.4                                                             Ram I          6.5                                                             South Dakota   6.7                                                             Touchdown      5.8                                                             LSD (.05)      0.7                                                             ______________________________________                                          Vigor Rating Scale 1-9; 9 = maximum vigor                                      .sup.(a) Locations: Fort Collins, CO; Post Falls, ID; North Brunswick, NJ      Adelphia, NJ; Richmond Hill, Ontario; Pooled data from Halsey, Hubbard an      Gervais, OR.                                                             

Turf diseases are one of the major causes of inconsistent and poor turf performance. Ba 73-366 has been found to have a medium to high level of resistance to a serious bluegrass disease known as leaf spot (also known as melting out) caused by Drechslera poae (formerly called Helminthosporium vagans); a medium to high level of resistance to several rust diseases caused by Puccinia spp.; and medium to high level of resistance to dollarspot caused by Sclerotinia homoeocarpa. Comparisons of disease incidence of Ba 73-366 as compared with other bluegrass varieties in regard to leaf spot, rusts, powdery mildew and dollarspot are set forth in Tables 16-21. Additional comparisons are presented in Tables 22-25 identifying good drought tolerance and high seed yields relative to other bluegrasses.

                  TABLE 16                                                         ______________________________________                                         Comparison of Leaf Spot Incidence of Ba 73-366 and                             Other Kentucky Bluegrass Varieties Grown Under Shade                           Conditions at Marysville, Ohio                                                 Variety        % Leaf Spot                                                     ______________________________________                                         Ba 73-366      0.0                                                             Adelphi        5.0                                                             America        40.0                                                            Banff          2.5                                                             Bristol        0.0                                                             Classic        5.0                                                             Eclipse        2.5                                                             Georgetown     7.5                                                             Glade          7.5                                                             Kenblue        10.0                                                            Merion         0.0                                                             Nassau         0.0                                                             Newport        0.0                                                             Park           50.0                                                            Ram I          40.0                                                            Sydsport       27.5                                                            Vantage        2.5                                                             Victa          2.5                                                             Mean           9.8                                                             LSD (.05)      26.7                                                            ______________________________________                                          Leaf Spot Rating = % area covered by disease                             

                  TABLE 17                                                         ______________________________________                                         Comparison of Dollar Spot Incidence of Ba 73-366 and                           Other Kentucky Bluegrass Varieties at Kingston, R.I.                           Variety        Dollar Spot                                                     ______________________________________                                         Ba 73-366      8.3                                                             Abbey          8.0                                                             Able I         8.3                                                             A-34           7.7                                                             Banff          7.7                                                             Baron          7.7                                                             Challenger     8.0                                                             Classic        8.0                                                             Coventry       7.7                                                             Eclipse        8.3                                                             Estate         8.3                                                             Georgetown     8.0                                                             Glade          7.7                                                             Gnome          8.0                                                             Haga           7.7                                                             Kelly          8.0                                                             Kenblue        8.0                                                             Marquis        8.0                                                             Merion         7.7                                                             Midnight       8.3                                                             Monopoly       8.0                                                             Nassau         8.0                                                             Ram I          7.3                                                             South Dakota   8.0                                                             Touchdown      8.0                                                             LSD (.05)      0.9                                                             ______________________________________                                          Dollar Spot Rating 1-9; 9 = no disease                                   

                  TABLE 18                                                         ______________________________________                                         Comparison of Powdery Mildew Incidence of Ba 73-366                            and Other Kentucky Bluegrass Varieties Grown Under                             Shade Conditions at Marysville, Ohio                                                         % Powdery Mildew                                                 Variety         Test 1  Test 2                                                 ______________________________________                                         Ba 73-366       80.0    27.5                                                   Adelphi         35.0    37.5                                                   Bristol         30.0    17.5                                                   Dormie          30.0    27.5                                                   Glade           35.0    45.0                                                   Merion          75.0    67.5                                                   Monopoly        7.5     15.0                                                   Nassau          27.5    45.0                                                   Park            50.0    35.0                                                   Ram I           50.0    42.5                                                   Vantage         37.5    10.0                                                   Victa           87.5    50.0                                                   Wabash          25.0    5.0                                                    Mean            48.0    35.6                                                   LSD (.05)       43.0    22.0                                                   ______________________________________                                    

                  TABLE 19                                                         ______________________________________                                         Comparison of Stem Rust Incidence of Ba 73-366 and                             Other Kentucky Bluegrass varieties at Kingston, R.I.                           Variety        Stem Rust                                                       ______________________________________                                         Ba 73-366      6.7                                                             Abbey          7.0                                                             Able I         3.3                                                             A-34           4.3                                                             Banff          7.7                                                             Baron          7.0                                                             Challenger     4.0                                                             Classic        8.0                                                             Coventry       6.7                                                             Eclipse        4.0                                                             Estate         6.3                                                             Georgetown     8.7                                                             Glade          7.7                                                             Gnome          7.0                                                             Haga           8.0                                                             Kelly          8.0                                                             Kenblue        5.7                                                             Marquis        6.7                                                             Merion         1.0                                                             Midnight       8.0                                                             Monopoly       6.3                                                             Nassau         8.0                                                             Ram I          8.0                                                             South Dakota   4.3                                                             Touchdown      2.3                                                             LSD (.05)      1.4                                                             ______________________________________                                          Stem Rust Rating 1-9; 9 = no disease                                     

                  TABLE 20                                                         ______________________________________                                         Comparison of Leaf Rust Incidence of Ba 73-366 and                             Other Kentucky Bluegrass Varities at Kingston, R.I.                            Variety        Leaf Rust                                                       ______________________________________                                         Ba 73-366      5.7                                                             Abbey          6.3                                                             Able I         7.0                                                             A-34           6.0                                                             Banff          7.0                                                             Baron          8.3                                                             Challenger     5.7                                                             Classic        8.7                                                             Coventry       7.0                                                             Eclipse        5.7                                                             Estate         6.3                                                             Georgetown     7.7                                                             Glade          7.0                                                             Gnome          6.7                                                             Haga           7.0                                                             Kelly          5.0                                                             Kenblue        6.7                                                             Marquis        6.3                                                             Merion         2.3                                                             Midnight       6.0                                                             Monopoly       5.3                                                             Nassau         7.0                                                             Ram I          6.7                                                             South Dakota   6.7                                                             Touchdown      3.7                                                             LSD (.05)      2.4                                                             ______________________________________                                          Leaf Rust Rating 1-9; 9 = no disease                                     

                  TABLE 21                                                         ______________________________________                                         Comparison of Stripe Rust Incidence of Ba 73-366                               and Other K28 Kentucky Bluegrass Varieties at                                  Various Locations in Oregon                                                    Variety        Stripe Rust.sup.(a)                                             ______________________________________                                         Ba 73-366      5.0                                                             Abbey          4.3                                                             Able I         6.0                                                             A-34           5.0                                                             Banff          6.0                                                             Baron          6.0                                                             Challenger     5.3                                                             Classic        6.3                                                             Coventry       5.0                                                             Eclipse        6.0                                                             Estate         5.7                                                             Georgetown     6.3                                                             Glade          3.0                                                             Gnome          4.7                                                             Haga           6.3                                                             Kelly          5.0                                                             Kenblue        3.3                                                             Marquis        5.3                                                             Merion         3.7                                                             Midnight       4.7                                                             Monopoly       5.3                                                             Nassau         5.3                                                             Ram I          6.0                                                             South Dakota   4.0                                                             Touchdown      3.0                                                             LSD (.05)      1.2                                                             ______________________________________                                          Stripe Rust Rating 1-9; 9 = no disease                                         .sup.(a) Locations: Pooled data from Halsey, Hubbard and Gervais, Oregon.

                  TABLE 22                                                         ______________________________________                                         Comparison of Drought Tolerance as Recovery of                                 Ba 73-366 and Other Kentucky Bluegrass Varieties                               at Various Locations in the U.S.A. 1991                                                   Carbondale                                                          Variety    Illinois     Oregon.sup.(a)                                                                           Mean                                         ______________________________________                                         Ba 73-366  5.0          4.7       4.8                                          Abbey      5.0          4.0       4.5                                          Able I     4.7          4.0       4.3                                          A-34       5.3          1.3       3.3                                          Banff      4.7          2.3       3.5                                          Baron      4.7          6.3       5.5                                          Challenger 5.0          2.0       3.5                                          Classic    4.7          3.7       4.2                                          Coventry   5.7          3.7       4.7                                          Eclipse    5.0          1.7       3.3                                          Estate     4.7          6.3       5.5                                          Georgetown 4.3          2.7       3.5                                          Glade      4.7          3.9       4.2                                          Gnome      4.7          5.0       4.8                                          Haga       5.3          2.7       4.0                                          Kelly      4.7          4.3       4.5                                          Kenblue    4.3          5.3       4.8                                          Marquis    4.0          4.3       4.2                                          Merion     5.3          1.7       3.5                                          Midnight   5.3          3.7       4.5                                          Monopoly   3.0          6.3       4.7                                          Nassau     4.7          5.3       5.0                                          Ram I      5.3          3.3       4.3                                          South Dakota                                                                              4.7          2.7       3.7                                          Touchdown  5.0          3.7       4.3                                          LSD (.05)  1.7          1.7       1.2                                          ______________________________________                                          Drought tolerance (recovery) Rating 1-9; 9 = complete recovery                 .sup.(a) Pooled data from Halsey, Hubbard and Gervais, Oregon.           

                  TABLE 23                                                         ______________________________________                                         Comparison of Seed Yields in Pounds Per Acre from                              Solid Row Trials of Ba 73-366 and Other Kentucky                               Bluegrass Varieties at Gervais, Oregon                                                Variety                                                                               Lbs/Acre                                                         ______________________________________                                                Ba 73-366                                                                             1382                                                                    Bristol                                                                                862                                                                    Victa  1342                                                                    LSD (.05)                                                                              216                                                             ______________________________________                                    

                  TABLE 24                                                         ______________________________________                                         Comparison of Seed Yields in Pounds Per Acre for                               Ba 73-366 and Other Kentucky Bluegrass Varieties Over                          a Two Year Period at Gervais, Oregon                                                         Lbs./Acre                                                        Variety         Year 1  Year 2                                                 ______________________________________                                         Ba 73-366        920    1258                                                   Abbey           1124    1314                                                   Apart           1244     851                                                   Coventry         786     914                                                   Garfield        1138     952                                                   Newport         1165    1002                                                   LSD .05          209     176                                                   ______________________________________                                    

                  TABLE 25                                                         ______________________________________                                         Comparison of Seed Yields in Pounds Per Acre for                               Ba 73-366 and Other Kentucky Bluegrass Varieties at                            La Grande, Oregon                                                                     Selection                                                                             Lbs./Acre                                                        ______________________________________                                                Ba 73-366                                                                             1,612                                                                   Abbey  1,549                                                                   Coventry                                                                              1,046                                                                   LSD .05                                                                                 160                                                            ______________________________________                                     

We claim:
 1. A variety of Kentucky bluegrass, substantially as shown and described, characterized by a medium to high level of resistance to several serious diseases, including leaf spot and melting out disease, several rust diseases and dollar spot; a desirable green color throughout the growing season; good drought recovery capability; a medium to high quality dense presistent turf forming ability under a wide variety of environmental conditions; and a high level of seed yielding capacity. 